Tatsu WordPress Oshine

Anyone provide tutorials on Tatsu WordPress platform? I had a company redesign my website and she used an Oshine theme but I can’t figure out some basic settings for the blog. I’ve reached out to her to inquire about paying for instructions on maintaining my website but She has completely ghosted after she had completed the design of the website and a bit lost on maintaining it. I have looked all over YouTube and can’t seem to find any tutorials.